if lookFor is in card field "system" of card 2 then
put "system choice" into card field status of card 2
put return after card field status of card 2
put lookFor after card field status of card 2
put return after card field status of card 2
put card field "title" after card field status of card 2
set visible of card field menuList of card 2 to false
go to card 2
end if
if lookFor is in card field "type" of card 2 then
put "type choice" into card field status of card 2
put return after card field status of card 2
put lookFor after card field status of card 2
put return after card field status of card 2
put card field "title" after card field status of card 2
set visible of card field menuList of card 2 to false
go to card 2
end if
if lookFor is in card field "discipline" of card 2 then
put "discipline choice" into card field status of card 2
put return after card field status of card 2
put lookFor after card field status of card 2
put return after card field status of card 2
put card field "title" after card field status of card 2
set visible of card field menuList of card 2 to false
go to card 2
end if
end hit
-- part 23 (field)
-- low flags: 81
-- high flags: 0004
-- rect: left=50 top=150 right=325 bottom=462
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 3
-- text size: 18
-- style flags: 256
-- line height: 24
-- part name: helper
-- part 24 (button)
-- low flags: 00
-- high flags: 2000
-- rect: left=0 top=68 right=80 bottom=512
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
send hit to card field clickable
end mouseUp
-- part 25 (button)
-- low flags: 00
-- high flags: 2000
-- rect: left=0 top=80 right=92 bottom=512
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
send hit to card field clickable
end mouseUp
-- part 26 (button)
-- low flags: 00
-- high flags: 2000
-- rect: left=0 top=92 right=104 bottom=512
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
send hit to card field clickable
end mouseUp
-- part 27 (button)
-- low flags: 00
-- high flags: 2000
-- rect: left=0 top=104 right=116 bottom=512
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
send hit to card field clickable
end mouseUp
-- part 28 (button)
-- low flags: 00
-- high flags: 2000
-- rect: left=0 top=116 right=128 bottom=512
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
send hit to card field clickable
end mouseUp
-- part 29 (button)
-- low flags: 80
-- high flags: 2000
-- rect: left=206 top=140 right=162 bottom=306
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
send hit to card field clickable
end mouseUp
-- part 30 (button)
-- low flags: 80
-- high flags: 2000
-- rect: left=206 top=140 right=162 bottom=306
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
send hit to card field clickable
end mouseUp
-- part 31 (button)
-- low flags: 80
-- high flags: 2000
-- rect: left=206 top=140 right=162 bottom=306
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
send hit to card field clickable
end mouseUp
-- part 32 (button)
-- low flags: 80
-- high flags: 2000
-- rect: left=206 top=140 right=162 bottom=306
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
send hit to card field clickable
end mouseUp
-- part 33 (button)
-- low flags: 00
-- high flags: 2003
-- rect: left=0 top=0 right=32 bottom=32
-- title width / last selected line: 0
-- icon id / first selected line: 32488 / 32488
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: New Button
----- HyperTalk script -----
on mouseUp
put return after card field status of card 2
put card field "title" into line 3 of card field status of card 2
go to card 2
end mouseUp
-- part 34 (button)
-- low flags: 00
-- high flags: 2003
-- rect: left=480 top=0 right=32 bottom=512
-- title width / last selected line: 0
-- icon id / first selected line: 25002 / 25002
-- text alignment: 1
-- font id: 0
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: Help
----- HyperTalk script -----
on mouseDown
set visible of card field helper to true
end mouseDown
on mouseUp
set visible of card field helper to false
end mouseUp
on mouseLeave
set visible of card field helper to false
end mouseLeave
-- part 35 (field)
-- low flags: 81
-- high flags: 0000
-- rect: left=156 top=120 right=205 bottom=356
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 0
-- font id: 3
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: discipline
-- part 36 (field)
-- low flags: 81
-- high flags: 0000
-- rect: left=156 top=120 right=205 bottom=356
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 0
-- font id: 3
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: system
-- part 37 (field)
-- low flags: 81
-- high flags: 0000
-- rect: left=156 top=120 right=205 bottom=356
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 0
-- font id: 3
-- text size: 12
-- style flags: 0
-- line height: 16
-- part name: type
-- part contents for card part 6
----- text -----
Electric Fields of Point Charges
-- part contents for card part 7
----- text -----
Electric Fields of Point Charges allows the student to set up an arbitrary arrangement of point charges in a plane and examine their electric field pattern. One may place up to 10 fixed charges on the screen and then look at the resultant electric field using any one of three different views: vectors, directional arrows or field lines. Vectors show both the magnitude and direction of the electric field at each point clicked with the mouse; directional arrows show the direction only using a fixed length arrow; field lines display continuous lines originating at the selected point and running parallel to the field from positive to negative. The program has two parts; the simulation, which is suitable for lecture demonstrations comprises the first section; a student exercise comprises the second. In the exercise, the student selects a number of charges (from 1 to 4, or an unknown number, n) and then the program generates a random arrangement consisting of that many charges, without displaying them on the screen. The student must use the various views of the electric field to infer the location and magnitudes of each of the charges. Feedback is available at any time, indicating of the correctness and completeness of the student's current inferences. When ready, students may expose the charges and compare their predictions with the actual arangement. This program has been used in the third semester introductory physics course for science and engineering students at Carnegie Mellon.
-- part contents for card part 19
----- text -----
Carnegie Mellon University
-- part contents for card part 23
----- text -----
Click "UP-ARROW" for previous menu
Click any BOLD-FACE phrase for a listing of entries sharing that
property or attribute
-- part contents for card part 18
----- text -----
Trowbridge, David
-- part contents for card part 8
----- text -----
DEPARTMENT: Center for Design of Educational Computing
DESCRIPTORS: introductory physics, fields
DOCUMENTATION: User documentation is unnecessary. For suggestions about classroom usage, contact the author.
VERSION: October 30, 1987
LANGUAGE: CMU Tutor
RESTRICTIONS: Educational Use (Copyrighted)
AVAILABILITY: in the ICEC-Ware collection
FILE: efield
-- part contents for card part 20
----- text -----
Physics
Simulation for Learning
Workstation CMU Tutor 1.2 (12/87)
Macintosh (CMU Tutor)
IBM PC (CMU Tutor)
-- part contents for card part 35
----- text -----
Physics
-- part contents for card part 37
----- text -----
Simulation for Learning
-- part contents for card part 36
----- text -----
Workstation CMU Tutor 1.2 (12/87)Macintosh (CMU Tutor)IBM PC (CMU Tutor)